Running examples in 'multiselect-Ex.R' failed
The error most likely occurred in:

> ### Name: multiselect
> ### Title: Selecting Combinations of Predictors by Leveraging Multiple AUCs
> ###   for an Ordered Multilevel Outcome
> ### Aliases: multiselect
> 
> ### ** Examples
> 
>   ## Don't show: 
>   library(MASS)
>   ## shorter example not for users
> 
>   set.seed(15)
>   p = 4 ## number of predictors
>   matX <- matrix(rep(0.3,p*p), nrow=p, ncol=p) ## covariance matrix for the predictors
>   diag(matX) <- rep(1,p)
> 
>   simD <- apply(rmultinom(400, 1, c(0.6,0.335,0.065)),2,which.max)
>   simDord <- simD[order(simD)]
>   numobs <- table(simDord)
> 
>   simX1 <- mvrnorm(numobs[1], rep(0,p), 2*matX)
>   simX2 <- mvrnorm(numobs[2], c(1.5, 1, rep(0.5,(p-2)/2), rep(0.1,(p-2)/2)), 2*matX)
>   simX3 <- mvrnorm(numobs[3], c(rep(2,2), rep(0.8,(p-2)/2), rep(0.1,(p-2)/2)), 2*matX)
>   simX <- rbind(simX1, simX2, simX3)
> 
>   exdata <- data.frame("D"=simDord, simX)
> 
>   multiselect(data=exdata, size=2, Breps=2, nummod=3)
Error in namespaceExport(ns, exports) : 
  undefined exports: %s!=%, %s!==%, %s+%, %s<%, %s<=%, %s==%, %s===%, %s>%, %s>=%, %stri!=%, %stri!==%, %stri+%, %stri<%, %stri<=%, %stri==%, %stri===%, %stri>%, %stri>=%, stri_datetime_add<-, stri_sub<-, stri_subset<-, stri_subset_charclass<-, stri_subset_coll<-, stri_subset_fixed<-, stri_subset_regex<-, stri_c, stri_c_list, stri_cmp, stri_cmp_eq, stri_cmp_equiv, stri_cmp_ge, stri_cmp_gt, stri_cmp_le, stri_cmp_lt, stri_cmp_neq, stri_cmp_nequiv, stri_compare, stri_conv, stri_count, stri_count_boundaries, stri_count_charclass, stri_count_coll, stri_count_fixed, stri_count_regex, stri_count_words, stri_datetime_add, stri_datetime_create, stri_datetime_fields, stri_datetime_format, stri_datetime_fstr, stri_datetime_now, stri_datetime_parse, stri_datetime_symbols, stri_detect, stri_detect_charclass, stri_detect_coll, stri_detect_fixed, stri_detect_regex, stri_dup, stri_duplicated, stri_duplicated_any, stri_enc_detect, stri_enc_detect2, stri_enc_fromutf32, stri_enc_get, stri_enc_inf
Calls: multiselect ... tryCatch -> tryCatchList -> tryCatchOne -> <Anonymous>
Execution halted